Partners' Capital (Schedule of Common Units) (Details) - shares |
3 Months Ended | 9 Months Ended |
|---|---|---|
Mar. 31, 2016 |
Sep. 30, 2016 |
|
| Partners' Capital [Abstract] | ||
| Number of common units at December 31, 2015 (in shares) | 87,365,706 | 87,365,706 |
| Common units issued in connection with acquisitions (in shares) | 5,710,922 | |
| Common units issued in connection with the PIPE Transaction (in shares) | 2,263,158 | 2,263,158 |
| Number of common units at September 30, 2016 (in shares) | 95,339,786 |